Molding machine



April 9, 1929. e. F. PINSUTI MOLDING MACHINE 5 Sheets-Sheet Filed July 2 1926 llllllllilml INVENTOR Aprifi 9, 1929. G. F. PlNSUTl 3,703,106

MOLDING MACHINE Filed July 24. 1926 5 Sheets-Sheet 3 INVENTOR am W' April Q; 1929.

G. F. PINSUTI MOLDING MACHINE Filed July 24, 1926 5 Sheets-Sheet 4 INVENTOR prifl 9, 1929. i Q G. F. PINSUTI J J MOLDING MACHINE Filed July 24, 1926 5 Sheets-Sheet 5 ms KfioR%% Patented Apr. 9, 1929 GrosErPiE F. PINsUTI, of NEW YORK, 1\i. Y.

e iiioriniivs MACHINE.

Application filed @1724,

This invention relates to a moldingmaw chine and more especially toaan apparatus for mechanically molding .door' knobs. and similar articles from=any one of the -I1l111161'-- ouscomposit-ionsof material: from which articles-of this generalnature -are usually manufactured. In carryi-ngout the invention the apparatus includes a revoluble drum adapted to be turned throughpartial revolu tiens at predetermined intervals and which any one of a plurality of mold frames is placed, together with,- devices avliereby when the cylinder is in oneposition thematerial fro m which the article to be madey-is molded is p'laced in a mold; in another position of the cylinder the material is pressed to shape and otherwise formedgwhile in another position the finished article is delivered to a conveyor orgcarrier, as will be hereinafter more particularly described;

In thedrawing Figure 1 isaside elevation illustrating a molding machine made in accordance with mypresent invention. Fig. 2 is a section on line 2 2, Fig. 1.

.Fig. 8 is an enlarged-longitudinal -section throughxthe revoluble cylinder and associated parts. I g I w e vFig. f is a planof the cylinder and the parts associatedtherewith. ,4 Figi 5 is a sectional elevation illustrating the devices. for forming an undercut recess in the knob which the apparatus is adapted to form.

Fig. 6'is an elevation and partial; section of the lever bracket and shafts for moving parts ofthc molds and n l Fig. Tis a diagrammatic elevation of the gears employed.

Byreference'to that in carrying out my invention theap paratus made in accordancethe rewit-h in: cludes a machine frame having a base 10 an d:oppositely disposed and suitablyspaced side wallsll and 12 which maybe, secured to one another byicross bars or braces 13,- 14s Extending between the-side walls-11 and 12there is-a drive:sliaft-15 which is;

journaled in bearings lfi provided thereforin :theseside :uwallsWAlso mounted inthe side walls there. are: stub shafts 17 and '18 mounted respectively 'inbearings 1-9 and 20 providedtherefor i-in thesesidewalls. I

the drawing it; will be seen i I 1926. Serial No. 124,571.

Mountedon the drive shaft 15 there is a pulley in order by. a suitable belt or othshaft 17. The gear 27 may be secured to the stub shaft by means of a keyorv otherwise. Thegear 27 mesheswith a gear .28:suita bly fixed to the auxiliary shaft 21: Ont-he drive 15 there is also a gear 2 1- meshing with a gear 25 fixed on the shaft 26. The gear 25" meshes with gear 29 secured on a shaft 30which is journaled in bearings provided therefor in the frame of the machine, and the gear 29 meshes with a gear which .issecured on a cam shaft 32 alsojournaled in suitable bearings provided therefor in an extension 83 of the side walls of the machine. R ,Q

Mounted on the stub shafts l7;and, 18 I employ a cylinder 34. The heads 35 and 86 of this cylinder .arc suitably connected to these stub shafts 17 and 18 so. asto'turn therewith. The cylinder is providcdwith an opening or pocket adaptedto receive and containany one of a number of sets of molding devices. jAs illustrated; one of these molding devices includes a plate 37 the outer surface of which is made to conform with the surface of the "cylinder so that when in position it completes the continuitythereof and is held in position in the cylin derby means of bolts or screws 38 orot 1- erwise. In this plate 37 there is a pluralityiof apertures 89, '40 and 41 preferably in alignment as clearly shown in Fig. lof the drawing. Passing through these apertures. there are mold plungers 42, 4:3, and .44. At their lower orinncr ends these mold plungersare fixed in a base 45 which is movable in the opening in the cylinder. 'lhelba'sclfi and the mold plungers are normally main- .tained yieldingly in position by sets of bolts 46, 47 -and-springs 48, 49 associatedtherewith. Each of these bolts passesthrough a bolt hole provided therefor in the plate 37- and has associated therewith-one of the springs for normally maintaining the heads of the bolts against the outer surfaceofthe. plate-orwithin arecess thesam'e pre vided for this purpose, whereby the outer ends of the mold plungers are normally maintained in position Within-the openings in the plate 37. It will be understood that the outer ends of these mold plungers are recessed in such a manner as to shape a part of the article to be molded. Entering the opening in the-cylinderfrom the opposite The bolts'54t-and 55 pass through bolt holes provided therefor in the plate 50 and are secured in the base 50 which withthe mold plungers 51, 52 and 53 are normally held in i illustrated the apparatus as being fitted with sion requires.

positionjyieldin'gly by the springs 56 and 57. It will be understood that while I have sets of three mold plungers, any desired number thereof may be employed, and'the outer ends thereof'may be recessed as occa- In operating the apparatus the mold plungers are limited in their inward movement'by the heads of the bolts so that the outer ends thereof lie in the openings forming part of the molds in the plates I of the mold frame. In delivering the mold ed article from, the molds the mold plungers are moved radially relatively to v the cylinder by suitable devices as hereinafter described through the sets of bolts 58, 59 and and-61. The bolts 58-and 59 pass through bolt holes provided therefor in the plate 37, also through bolt. holes provided there- 1 forin the base 45, and are secured by being turned down in tappediopenings or otherwlse in the base 50. In a similar manner the bolts 60 and 61 pass through bolt holes provided therefor in the plate 50 and; also through bolt holes provided therefor in the base 50" and are turned-down into tapped openings provided therefor in the base'ftli.

I .In theupper portionof the frame of the apparatus there is a hopper 62. The side Walls of this hopper are indicated at '63 and 64 and also as illustrated, are preferablymounted on the auxiliary shaft 21 bymeans "of lugs orbosses 65, 66 through which the auxiliary shaft passes. The loWeren'ds of the walls of the hoppernare made to conform to and lie in contact With or in close proximity to the surface of the cylinder so th atfthe surface of the cylinder may be considered as forming the'bottom of the'hopper. Mounted on the auxiliary shaft 21 i within the hopper 62 there is a hub 67 provided with spaced arms 68 each carrying a blade or paddle 69. The composition of material from which the articles arevto be Like the othermolded is placed in a hopper and agitated with devices for forming an undercut recess 5 in the article to bemojlded, but as each set ofv these devices is vthe same, but one of them i will be described in detail. The reciprocatin g shafts 70, 71 and 72 pass through and are journaled in a bracket 73 having end flanges 74 and 75by which or other similar and suit-v ablelmeans the bracket is connected and secured in position tothe side walls-'of'the apparatus.

means of a spring 77, or otherwise, aroller 78 mounted in the head .76 is maintained in contact with the face of a cam 7 9 mounted on the cam shaft At the opposite end thereof the reciprocating shaft 70wis fitted with a compressor head 80. The extremity of this compressor head is adapted to enter the opening 89 in the plate 37 and. is suitably recessed as indicated at 81to. cooperate with the reeessed'outer end of the mold plunger 42 to shape a knobor other article to; be formed in the a )paratus. This head is slotted as indicated at 82, andwithinthe slot 82 there areoppositely disposedarms 83 and 84 pivotally mounted at 85 and normally maintained inan initial position by means of a spring-86 or otherwise.- The outer ends of the arms 83 and 84 are preferably curved in opposite directionsand when in their initial positions the extremities-thereof are preferably in alignment andgform a plunger which enters the adjacent side of the The reciprocating, shaft 70-is' I provided'atone end with a head 7 6 andby material being molded. After penetrating th smaterial a predetermined distance the opposite ends of the-arms are moved ink; iwardly ortoward each other by means of the levers87 jand 88 so as to cause the extremities of the short curved ends of these arms to spread apart to form an undercut recess in [respectively adapted toengage the .extremities of the long ends of these arms to actuate the. same as hereinbefore described. These levers 87 and88 are plvotally mounted as indicated at 91 and 92 in arms 93 and 94 formed as part of the bracket 73, and at their other extremities the levers 87 and 88 are provided with rollers 95 and 96 which are normally maintained against the surface of that'levers similar to thelevers 8? and-88 are pivotally connected'in arms 99 and'1O0," and 101 and 102 "for operatingsimilar' parts employed to cooperate With theinold plungers 13 and ll. It Willifurthermore be understood that the same devices cooperating. ivith the mold plungers 42, 43,144 also cooperate respectively With the mold plungers 51, 52 and 53.

Associated with the frame andilying, on. the exterior ofth'e hopper 1' employ devices tor scraping or cleaning" the edges of the openings 39, and41 in the mold frame. As illustrated, and as particularly Sl1OWI1 in Fig.1 of the drawing, I employ rods 103 mounted to slide in bosses '104and actuated by springs 105 to maintain therollers carried by thelower ends of the. rods in contact with the surface of the cylinder and the plates of the mold frames so as to yieldingly; bear againstthe outer surfaces thereof and in so doing to scrape or clean. the edges of' the openings 39, 10 and 41 as aforesaid, it being understood that the rollers 106 extend longitudinally of the cylinders so thatall" these openings are simultaneouslycleaned or scraped."

pressed to shape, Inlay employ a set of pins indicated at'107 and 108 and adapted respectively toenterrecesses 109 and 110 inthe saidcylinde'r to fix the same 'in'position, that is to prevent the same from moving revolubly while the material is being pressed to shape. Thesepins may also made to extend into thematerial to fornrrecesses or notches therein it "so desired. These pins 107 andlOS are operated by means of levers 111 and 112. ltwilhbe understood that there is a set of pins and corresponding levers for eachof the sets of mold 'plungers,

the levers 111 and 112fbcing associated with the mold plunger 42 and be ng pivotally mounted at 91 and '92H111 tl1G arms 93'and 9st that the'pivotal-points of'these rollers are coincident with the p votal points ofthe levers 87 and-88. At their opposite ends these levers are provided with rollers nor-- anally maintained "in contact with; thesurlever 11%. Thislever is pivotally mounted as indicated at 115 in the arm 99 of the bracket 73 and at oneend is provided With a rolle 11G normally maintained in contact With the surface of cam 117', While at its opposite e'nd'this lever carries a cross bar 11 i Which is adapted to contact with the headset the bolts to move the same downwardly and to thereby move the plate and the mold plungcrs 51,52 andbl from the position in which their outer ends lie withinthe plate 50 to that'in Which the outer ends of these mold. plun 'ers lie appreciably on the exterior of the plate 50. In this position the articles formed are delivered or freed from the plun ers. It will be understood of course, that when the cylinder is in the oppositc' position the bolts and 61 will be" ,snnllarly actuated to move the base 45 and the mold plunger-s l2, and tronrthe posit-ion inwvhich their outer ends lie within the plate 3''? to a similar position in Which the outer ends of these mold plungcrs are exterior of the plate 37. 7

The apparatus also includes a conveyor as. indicated at 118. This conveyor passes around drums 119, 120 mounted on suitably or is driven in any suitable manner so as to' have ini iarted thereto an. intermittent movement which corresponds to thato'f the cylinder. As illustrated, on the drive shaft- 15 there is mutilated gear'123 adapted to mesh with a gear 124 mounted on a sleeveon the shaft 26. is a sprocket 25 which engages the conveyor to drive the same. As illus rated, the conveyor is fitted with suitably spaced pins 120 adapted as the conveyor movesto en'- gage and remove a tray 127 trom'the'bo tom of a pile of these trays Whichare superimposed upon each other and maintained normally in place'in a tray frame 128. In travel this conveyor passes directly beneath the cylinder of the apparatus and onthe drive shaft 15 there is a cam 129 which is adapted to raise'the conveyor each time its movement is sto iped so as to receive the molded articles on the tray which is carried by the conveyor and is then placed immediai'zely beneath thecylinder so as to receive these molded articles. over, a set of rollers 130 carried by a shaft 131 journalcd in bearii gs in brackets may be employedto insure the return of the conveyor to its proper level before the trays reach the station at which they and the articles thereon are litted from thect'nivevor.

Inlthe operation of the apparatus as herein-- before described the drive shaft 15 is turned continuously by means of the pulley 23 ournaled shafts 121 and The convey Mounted on the sleeve there and a S111 tble belt from any source of pow r or otherivlse. The drive shaft tl'irough the mutilated gear24t intermittently engages the i .Plastic composition from which the door "gear'25 and this gear intermittently drives the gear 27 and the cylinder 34 with the mold frames therein. A correspondingly intermittentmovement is also transmitted from the gear 27 tothe gear. 28 to impart a corresponding movement to the, shaft 21 and the blades or paddles carried thereby. The

knobs or other articles are to be formed is placed in the hopper ('32. As the cylinder reaches the position shown-in Figs. 1 and 3,

' its motion is interrupted and quantities of the plastic material are passed into the open- .ings 39, 40 and 41 so. as to fill the same.

When this is accomplished the cylinder is turned a quarter revolution and again brought to a state of rest. Viflnle 1n thls position the pins 107, 108 are actuated to engage the cylinder to maintain the same in a revolubly fixed posrtronp Snnulta neously the reciprocating shafts 70, 71 and 72 are operated to bring the compressor heads into engagement with the mzitterial in the mold frames to shape or form the ma-' terial and simultaneously the arms 83 and 84 are actuated to swing the curved short ends thereof away from each other to provide the undercut recess in the article he ing molded. The arms 83 and 84 are then freed and the reciprocating shafts moved in the opposite direction to Withdrawthe com- 1 pressor heads from theplunger frames.

In passing from the first to the second position as hereinbefore stated the follower roller 106 engages-the edges defining the openings 89,

40 and 41 to wipe or scrape the same, and

will be understood, before the first aforesaid position is reached theadvance roller 106 performs the same function. The cylinder is then given a third quarter turn in which the mold plungers having the formed articles therein are in thelowerinost position and the mold plungers are moved outwardly by the ,downardinove1nent of the bolts 58 and 59. through the intervention of.

the lever 114 and .the cam 117. These articles are then freed from the mold plun'gers and deposited on the trays carried by the conveyor 118, which as Will be understood has nnparted thereto an intermittent movement by means of the mutilated gear 123, the teeth OfWlllCll successively engage with the teeth of the gear 124, to turn the sprocket 125 for driving the conveyor. It Will furthermore be understood that the gears 29 and 31 are so related to the gears 24 and 25 that the gear 31 and the cam shaft actuated thereby are turned. two revolutions for each revolution of the cylinder 34. VVhen the cylinder is in this third quarter position the mold plungers 51, 52 and 53 are in place for receiving the plastic composition from Whichthe articles are molded. The cylinder 34is then turned another quarter revolution and stopped for a like period, during which period,however,there is no operation performed by the par s of the machine. will also be understood that after the moldedarticles on the trays upon which they are I deposited reach, a predetermined station on the conveyor the trays .may be removed'aad transferred to a suitable place for drying or other purposes.

Iclaim as my invention: p

1; In a molding machine, an intermittently driven cylinder, a molding device carriedby vthe cylinder, means for placing a molding material in the molding device when the cylinder 1s-1n one pos tion, means for shaping the said material and forming'an under-.

cut recess therein when the cylinder is in a second position, and means for removing the shaped material when the cylinder is in v a third position. p v V 2. In a molding machlne, an intermittently driven cylinder, at molding device carried In a molding machine, an intermittent-1 ly driven cylinder, a plate having an opening therein fixed in the cylinder, a'molding plunger movable radially in the said plate and having its outer end shapedtoform part of an articleto be molded, means when the cylinder is inone position for forcing material to be molded'into the opening in the plate and against the shaped end of the plunger, means operative when the cylinder is in a second position for cooperating with the said plunger to'shape the said material, means operative when the cylinder is inthe last aforesaid position for forming anuns dercut recess in. the said material, and rneans operative When the cylinder is in a third position tofmove the said plunger to e ect the shaped material therefrom.

4. In amoldingmachine, an intermittently driven cyl nder, a platehaving an opening therein fixed in thecylinder, a molding plunger movable radially in the said plate and having its outer end shaped to form part of an article to be molded, means when the cylinder is in one position for forcing material to be molded into theop'ening in the plate and against-the shaped end of the plunger, means operatlve when the cylinder is in a second position for cooperating with the said plunger'toshape the said material, means operative when the cylinder 15 in the last aforesaid position for forming an undercut recess in the stud materlal, means operative When the cylinder is in a third position to move the said 'plungeri'to eject the shaped material-therefrom, and; an intermittently movable conveyor for receiving theshaped material. w

5. in a molding machine, an intermittently driven cylinder, a plate having an opening therein fixed in the cylindeiy'a molding alunger movable radially in the said plate and having its outer end shaped to formpart of an articleto be molded, means whenthe cylinder is in one position for-forcing ma-v terial to be molded into the opening in the plate and e 'mnst the shaped end. of the plunger, means operativewhen the cylinder is in asecond position tor maintaining the plunger in lined position relatively to the cylinder and the plate therein, means also operative whenthe cylinder is in the second position for shaping the said material, means operative when the cylinder is in the said second position for forming an undercut recess inthe said material, and meansvop'ers ative when the cylinder is in a third position for shifting, thesaid plunger radially and removing the shaped material therefrom.

6. In a molding machine, an intermittently driven cylinder, a pla te having an opening therein carried by the cylinder, a molding plunger movable radially in the opening in the said plate and having its outerv end recessed to shape apart otan article to be molded in the machine means tor normally maintaining said plunger in an initial position, devices operative when the cylinder is in one position for forcing material to beinoided int-o toe opening and against theouter face of the said plunger, a compressor head, pivotally mounted armsv carried by the said-compressor head, meanstor actuthe' saidarms When the cylinder is in second position for making an undercut "ccess in the said material, means for actuting in the said second position to enter the ening in the said plate and to cooperate P W material, and means operative-when the cylinder 15111 a third position for shifting the saidplunger radially toreniove the shaped "material therefrom. A

'2'. In a molding machine, an intermittently driven cylinder, a plate-having an opening therein carried by the 'cylinder,.a molding plunger movable radially in the opening in the said plate and having'its outer end recessed to shape a part of an article to be molded in the machine, means for normally maintaining said plunger in an initial position, devices operative when the cylinder is in one position for forcing material tobe molded into the opening and against the outer face of the said plunger, pins adapted to engage the said cylinder when the same is in a second position to temporarily maintain the said'cylinder in a revolubly fixed position, a compressor head, pivotally the compressor head when the cylinder ith the said plunger-tor shaping the said mounted arms carried by. the said compressor head, means for actuating the said arms when the cylinderis in a second position for making anundercut recessin the said material, means 'for actuating the compressorhead when the cylinder is in the said secondv position, to enterv the opening in the plunger for shaping the said material and means operative when the cylinder is in a third position-for shifting the; said plunger radially to remove the shaped material therefrom. i V

8. In a molding machine, a hollow revoluble cylinder having a longitudinal vopen-- ing therein, a plateadapted-to lit and be fixed in. place in the longitudinal opening in the cylinder and having an opening ing therein, a. plate adapted to fit and be fixed .inathe longitudinal opening in the cylinder and having a plurality of open1ngs therein, a :base lying Within the cylinder, a

plurality of spaced molding plungers carried by the said base each adapted to move radially in one of the-said openings in the plate, meansfor yieldingly maintaining the said base inthatposition Within the cylinder lIl' Whlcli the outer end of each of the mold ing plungors lies within its opening in the saidplate, and devices carried by the said base and operable for moving the same to- Wardthe said-plate for causing the outer endsoit the said molding plun'gers to'protrude beyond the. outer surface of the said plate. a v i in a molding machine, a hollowrevoluble cylinderhaving longitudinal openings in" oppositely disposed positions therein, plates each adapted tofit and to be fixed in position in one of the said openings in the cylinder and each having a plurality of" openings therein, bases lying within the,

said cylinder, aplurality of molding plungers carried bythe said bases and each adapted to move radially in one of the openings in one of the said plates, means for .yieldingly maintaining each of the said bases in anormal position within the cylinder in which the molding plungers car- :riedby the bases are so positioned that their outer ends lie Within the corresponding said plate and-to cooperate with the said oluble cylinder lmving ;v alongitudinal 'openopenings in thesaid plates, and means carried bythe said bases and operableto movethe same toward the said plates to cause the outerends of the said molding plungers to protrude beyond'thefaces of the said plates.

p e '11; In a molding machine, a hollow cyl inder havinga longitudinal open ng 1110115111, means for imparting an intermittent 'revoluble movement to the said cylinder, a plate adapted to fit and be fixedin place in ,the said longitudinal.opening in the cylin-' der and having an opening therein, a base lying withinthecylinder, a inoldingplunger caried by the base and adapted tomove radially in the opening in the plate, means for yield-ingly maintaining the base in a position within the cylinder in which the outerface of the molding plunger lies withn the opening in the plate, devicescarried byth'e'base and operable. tomove the same toward the said plate to cause the outer end of the 'inoldingplunger to protrude beyond 'tliefplate,-means operable when the cylinder is in one position for forcing material 4 to be moldedinto the opening-in the plate -positionfor actuating the said devices can 7 TlGCl byithe base for moving-the sanietoward and against the outer end ofthe said molding plunger, means operative when the cylinder is in another position :tor compressing the materialto be molded, and-means operative when the cylinderis .in'ano'ther the plate in order to causetheouter end of the molding plunuger .to protrude beyond the plate and therebyeject the molded material. 12. In a molding inder having a longitudinal opening therein,

means for imparting an intermittent revolu-,

ble movement, to the ,saidcylinder, aplateadapted to fit and be fixed in positionin the longitudinal opening in the cylinder and vices carried by the base-and operable for inoving thesaine toward the plate for cans ing the outer ;ends of, the said molding.

plungers toprotrudebeyond the outer surmachine, a hollow cyling EoneZ'xof the said bases toward the. corface of the plate, devicesoperative when the cylinder is in one position forforcing ma terial to be molded into the said openings in the plate. andaga-inst the outer endsot the said molding plungers,-.means operative when the cylinder is-ina second position for co-operating with the molding plungers to shape the said material. to be iinolded, and means operative when the cylinder is in athii'd position for actuating the said de 5 vices for moving the basetoward the plate to cause the outer ends of the molding plungers to protrude beyond the surface of the plate to thereby eject the molded material.

'13. In a molding machine, ,a revoluble cylinder having oppositely disposed longitudinal openings therein,'means for impart ving an intermittent revoluble movement to the said cylinder, plates each adapted to it and be fixed in position in one of thelongitudinal openings in the cylinder, bases ly ing within'the cylinder each associiatedwith one of: the said plates, a plurality of mold ingplungers carried (by each of the said bases eachmoldin )lun 'er bein ada ted to move radially in one of the openings in one of the said; plates, means for yieldingly maintaining-each of the said biases in a norinal-Iposition within the cylinder in l which thejn olding plungers carried bythe bases are so positioned that their outer ends saidv plates, means carried by the plungers" and operable to move each baseitoward the plate with which it is associated to. cause the lie within the corresponding openings in the 1 outer ends of the corresponding.molding plungerslto. protrude beyondthe face of the corresponding plate, means operative when the cylinder 181110116 position foritorcing material tobe molded into the openings in one of thesaid plates'and against the outer ends :of the said molding plungers," Y

means opera tive when; the cylinder is in a second position for. cooperating with the molding plunger-s .to shape the material tobeQmoldecL-and means operative when the the said means carriedby the bases forinov cylinder is in athir'dlposition for'actuat'i-ng 10.5

responding'plate toicausethe outer ends of the molding plungerstorprotrude beyond the surface of the corresponding plate and thereby fejectithe, molded material.)

. Signed by. mefthis 2nd day. of July, 1926.- GIUSEPPE F, PINSUTI. 

